import axios, {
  type AxiosResponse,
  type InternalAxiosRequestConfig,
} from "axios";
import { tansParams, blobValidate } from "@/utils/ruoyi";
import cache from "@/utils/cache";
import { HttpStatus } from "@/enums/RespEnum";
import { errorCode } from "@/utils/errorCode";
// import { LoadingInstance } from 'element-plus/es/components/loading/src/loading';
// import FileSaver from "file-saver";
// import { getLanguage } from '@/lang';
import {
  encryptBase64,
  encryptWithAes,
  generateAesKey,
  decryptWithAes,
  decryptBase64,
} from "@/utils/crypto";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import { useUserStore } from "@/store/userStore";
import router from "@/router";
import { useLoginModalStore } from "@/store/loginModalStore";

// import router from "@/router";

const encryptHeader = "encrypt-key";

const getToken = () => {
  return useUserStore().token;
};

// let downloadLoadingInstance: LoadingInstance;
// 是否显示重新登录
export const globalHeaders = () => {
  return {
    Authorization: "Bearer " + getToken(),
    clientid: import.meta.env.VITE_APP_CLIENT_ID,
  };
};

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
axios.defaults.headers["clientid"] = import.meta.env.VITE_APP_CLIENT_ID;
// 创建 axios 实例
const service = axios.create({
  baseURL: import.meta.env.VITE_APP_BASE_API,
  timeout: 500000,
});

// 请求拦截器
service.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    // 对应国际化资源文件后缀
    // config.headers['Content-Language'] = getLanguage();

    const isToken = config.headers?.isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = config.headers?.repeatSubmit === false;
    // 是否需要加密
    const isEncrypt = config.headers?.isEncrypt === "true";

    if (getToken() && !isToken) {
      config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // get请求映射params参数
    if (config.method === "get" && config.params) {
      let url = config.url + "?" + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }

    if (
      !isRepeatSubmit &&
      (config.method === "post" || config.method === "put")
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === "object"
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON("sessionObj");
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ""
      ) {
        cache.session.setJSON("sessionObj", requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 500; // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = "数据正在处理，请勿重复提交";
          // console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error("RepeatSubmit"));
        } else {
          cache.session.setJSON("sessionObj", requestObj);
        }
      }
    }
    if (import.meta.env.VITE_APP_ENCRYPT === "true") {
      // 当开启参数加密
      if (isEncrypt && (config.method === "post" || config.method === "put")) {
        // 生成一个 AES 密钥
        const aesKey = generateAesKey();
        config.headers[encryptHeader] = encrypt(encryptBase64(aesKey));
        config.data =
          typeof config.data === "object"
            ? encryptWithAes(JSON.stringify(config.data), aesKey)
            : encryptWithAes(config.data, aesKey);
      }
    }
    // FormData数据去请求头Content-Type
    if (config.data instanceof FormData) {
      delete config.headers["Content-Type"];
    }
    return config;
  },
  (error: any) => {
    return Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  (res: AxiosResponse) => {
    if (import.meta.env.VITE_APP_ENCRYPT === "true") {
      // 加密后的 AES 秘钥
      const keyStr = res.headers[encryptHeader];
      // 加密
      if (keyStr != null && keyStr != "") {
        const data = res.data;
        // 请求体 AES 解密
        const base64Str = decrypt(keyStr);
        // base64 解码 得到请求头的 AES 秘钥
        const aesKey = decryptBase64(base64Str.toString());
        // aesKey 解码 data
        const decryptData = decryptWithAes(data, aesKey);
        // 将结果 (得到的是 JSON 字符串) 转为 JSON
        res.data = JSON.parse(decryptData);
      }
    }
    // 未设置状态码则默认成功状态
    const code = res.data.code || HttpStatus.SUCCESS;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"];
    // 二进制数据则直接返回
    if (
      res.request.responseType === "blob" ||
      res.request.responseType === "arraybuffer"
    ) {
      return res.data;
    }
    if (code === 401) {
      if (router.currentRoute.value.path !== "/") {
        router.push({ path: "/", replace: true });
      }
      return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
    } else if (code === HttpStatus.SERVER_ERROR) {
      ElMessage({ message: msg, type: "error" });
      return Promise.reject(new Error(msg));
    } else if (code === HttpStatus.WARN) {
      ElMessage({ message: msg, type: "warning" });
      return Promise.reject(new Error(msg));
    } else if (code !== HttpStatus.SUCCESS) {
      ElNotification.error({ title: msg });
      return Promise.reject("error");
    } else {
      return Promise.resolve(res.data);
    }
  },
  (error: any) => {
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }

    if (message == "RepeatSubmit" || message == "不允许重复提交，请稍候再试") {
      return Promise.reject(error);
    }

    ElMessage({ message: message, type: "error", duration: 5 * 1000 });
    return Promise.reject(error);
  }
);

// 通用下载方法
// export function download(url: string, params: any, fileName: string) {
//   downloadLoadingInstance = ElLoading.service({ text: '正在下载数据，请稍候', background: 'rgba(0, 0, 0, 0.7)' });
//   // prettier-ignore
//   return service.post(url, params, {
//       transformRequest: [
//         (params: any) => {
//           return tansParams(params);
//         }
//       ],
//       headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
//       responseType: 'blob'
//     }).then(async (resp: any) => {
//       const isLogin = blobValidate(resp);
//       if (isLogin) {
//         const blob = new Blob([resp]);
//         FileSaver.saveAs(blob, fileName);
//       } else {
//         const resText = await resp.data.text();
//         const rspObj = JSON.parse(resText);
//         const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default'];
//         ElMessage.error(errMsg);
//       }
//       downloadLoadingInstance.close();
//     }).catch((r: any) => {
//       console.error(r);
//       ElMessage.error('下载文件出现错误，请联系管理员！');
//       downloadLoadingInstance.close();
//     });
// }
// 导出 axios 实例
export default service;
